Available light, or maybe with reflectors to guide it a little? For some reason I'm keying in on the light...cool idea, it's good seeing the creativity to come out of all the insanity.
@Colin Corneau All available light- the light was an overhead diffusion panel. I had a silver reflector off-camera right but I don't know how much if any effect it had. This was in my daylight outdoor studio (I have built a rig in my patio that provides a rope-operated background support and overhead diffusion/privacy screen. Would that my patio were maybe 3 feet wider, but it is what it is. I'm going to try another shoot soon when I can get a model - might go either strobes or hotlights (I have a very nice set of 1000w fresnels I can use, among other things).